PHP - Output and String Handling
Which of the following PHP code snippets will cause a syntax error due to incorrect string interpolation?
Which of the following PHP code snippets will cause a syntax error due to incorrect string interpolation?
easy📝 Syntax Q3 of 15
Step-by-Step Solution
Solution:
Step 1: Analyze each option for syntax correctness
Options B, C, and D use valid interpolation syntax. echo "Price is $price$";: echo "Price is $price$"; ends with a dollar sign immediately after variable, causing confusion.Step 2: Understand why echo "Price is $price$"; fails
PHP expects variable name after $, so "$price$" is invalid syntax.Final Answer:
echo "Price is $price$"; -> Option BQuick Check:
Invalid variable syntax = syntax error [OK]
Quick Trick: Avoid placing $ immediately after variable without braces [OK]
Common Mistakes:
- Appending characters directly after variable without braces
- Misusing array syntax inside strings
- Forgetting to close quotes
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